Fuel oil burner



FUEL OIL BURNER Filed Dec. 7, 1931 UDIOUMIIOO 0 (I 0 CPD 0 "000) "000 00000 00000 0 0 O O C- ,6

E fiYJZ/(fiTbZ'ZT/Z I L Bernard fz'eZd,

M u 5 M Patented Sept. 26, 1933 UNITED STATES FUEL on. BURNER Bernard Field, Brookline, Mass.

Application-December 7, 1931. Serial No. 579,526 8 Claims. (cl. 15887) This invention relates is a fuel oil burner 'par- One object of the invention is to provide a fuel oil burner which is so constructed that any carbon or graphite deposited in the same may be easily and thoroughly removed.

Another object of the invention is to provide an oil burner in which the vaporization of the 10 fuel oil is efficiently and thoroughly performed.

The invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the claims.

Referring to the drawing:

Fig. l is a plan view of the fuel oil burner of my invention, the same being broken away and partly shown in section.

Fig. 2 is a sectional elevation taken on line 2--2 of Fig. 1 and broken away.

Fig. 3 is a sectional elevation taken on line 3-8, Fig. 1, and broken away.

Like numerals refer to like parts in the several views of the drawing.

In the drawing, 5 is the base of the burner preferably constructed of aluminum and having a centrally positioned vaporizing chamber 6, oil being conducted to the vaporizing chamber through a fuel conduit 7 entering through the base 5 and into the vaporizing chamber 6. 8 is a cover for the vaporizing chamber 6 and is preferably composed of cast iron. Air passages 9 extend upwardly through the bottom of the base 5 through the vaporizing chamber 6 and through the cover 8. I v

The air passages in the vaporizing chamber are surrounded by walls 10 and the cover 8 rests loosely upon these walls. The cover 8 is circular in form and concentric with the conduit 7 and 40 with the vaporizing chamber 6. A perforated annular wall 11 rests upon the outer edge of the cover 8 and projects upwardly therefrom. A cover 12 rests upon the upper edge of the perforated wall 11 whereby an air chamber 13 is provided within the perforated wall 11 and between thecovers- 8 and 12. A rod 14 projects through the cover 8 and upwardly therebeyond into the air chamber 13 and downwardly'therefrom into the'conduit '7. This rod is preferably composed of an alloy of iron, nickel, aluminum, titanium and vanadium.

A wall 15 projects upwardly from the bottom of the base 5 and is concentric with the vaporizing chamber 6 forming the outer wall thereof. A concentric annular fuel groove 16 is provided concentric with the vaporizing chamber and having an outer wall 17 and an inner wall 18. Radial fuel passages 19 extendthrough the walls 15 and 18 and connect the vaporizing chamber 6 with the fuel groove 16. These passages are open at the .top and are "closed by an annular plate 20, preferably of cast iron, which extends across the top of the passages 19 and rests upon the upper edges of 'the walls 15 and 18. This annular plate isv provided with air passages 21 extending therethrough and also extending through the base 5 between the walls 18 and 15. Said plate has an annular groove 22 extending therearound and concentric with the vaporizing chamber 6. the plate consisting of a base 23 7 and inner and outer walls 24 and 25, the walls 15 and 24 being spaced apart from the peripheral edge of the cover 8. V

A perforated cylindrical wall 26 is supported on the inner wall 24 of the annular plate '20 and another perforated cylindrical wall 27 is supported upon the outer wall 25 of said annular plate. These walls extend upwardly from the annular plate and are provided with an annular cover plate 28. Thus an air chamber 29 isproso vided between the perforated. walls 26 and 27. Another perforated cylindrical wall 30 extends upwardly from the outer wall 17 of the fuel groove 16, thus forming a combustion chamber 31 between the perforated walls 27 and 30, and another combustion chamber 32- is provided between the walls 11 and 26. Thus alternate air and combustionchambers are formed, namely, the air chambers 13 and 29 and the combustion chambers 31 and32. V I

The annular "plate 20 is positioned upon the base by a projection 33 which projects upwardly from the base through a hole 34 in said annular plate. The annular plateis furtherpositioned by V lugs 35 which project downwardly therefrom into the fuel passages 19 and contact withthe walls of said fuel passages. Segmental ridges 36 extend upwardly from the bottom of the base 5 and across the fuel passages 19 but spaced apart therefrom.

- Fuel oil is fed to the fuel conduit 7 by any suitable means and enters. the vaporizing chamher 6 passing from the vaporizing chamber along the bottoms of the passages 19 into the fuel-oil groove 16. A wick of asbestos is inserted in the groove 16 and being saturated with oil it is lighted, thus lighting the oil in the burner. The oil is vaporized in part by the pin 14 which projects downwardly into the conduit '7 and upwardly into the air chamber 13 which, through combustion in 110 the combustion chambers 31 and 32, becomes intensely heated, thus assisting in the vaporizing of the oil as it passes upwardly in the conduit. The air enters the combustion chamber 32 5 through the perforated walls 11 and 26 from the air chambers 13 and 29 and also enters the combustion chamber 31 through the perforated walls 27 and 30, thus forming a combustible mixture which burns with intense heat.

To remove carbon or graphite from the burner the cover 12 and perforated wall 11 and the cover 8, together with the pin 14, are lifted from the burner and the graphite deposited on the lower face of the cover and on the pin 14 may then be easily removed. Also, the annular plate 20 is removed, together with the perforated walls 26 and 2'7 and the cover 28. Thus the fuel passages 19 can be readily reached in order to clean them, 1

Also, the perforated wall 30 can be removed to assist in cleaning the fuel groove 16.

Fuel oil when vaporized and suddenly cooled when the burnerisstopped causes a deposit of graphite, and in the burner of my invention the cover 8 and the annular plate 20 may be easily removed so as to expose the surfaces upon which the graphite is deposited.

I claim:

1. A fuel oil burner having, in combination, a base having a central vaporizing chamber and a fuel conduit opening into said vaporizing chamber, a concentric annular fuel groove being provided in said base spaced apart from said vaporizing chamber and also radial fuel passages leading from said vaporizing chamber into said annular fuel groove, said passages being open at the top, and an annular plate concentric with said vaporizing chamber and loosely supported upon the outer wall of said vaporizing chamber and the inner wall of the annular fuel groove and covering said radial fuel passages.

2. A fuel oil burner having, in combination, a base having a central vaporizing chamber and a fuel conduit openinginto said vaporizing cham ber, a concentric annular fuelgroove being provided in said base spaced apart from said vaporizing chamber and also radial fuel passagesleading from said vaporizing chamber into said annular fuel groove, said passages being open at the top, an annular plate concentric with said vaporizing chamber and loosely supported upon the outer wall of said vaporizing chamber and the inner wall of the annular fuel groove and covering said radial fuel passages, and a pin projecting from said base into said annular plate, wherebythe plate is positioned upon the base.

3. A fuel oil burner having, in combination, a base having a central vaporizing chamber and a fuel conduit opening into said vaporizing chamber, a concentric annular fuel groove being provided in said base spaced apart from said vaporizing chamber and also radial fuel passages leading from said vaporizing chamber into said annular fuel groove, said passages being open at the top, an annular plate concentric with said vaporizing chamber and loosely supported upon the outer wall of said vaporizing chamber and theinner wall of the annular fuel groove and covering said radial fuel passages, a pin projecting from said base into the annular plate, and lugs on said plate projecting downwardly and contacting with the walls of said fuel passages, whereby the plate is positioned onthe base.

4. A fuel oil burner having, in combination, a

7 base having a central vaporizing chamber and a fuel conduit opening into said vaporizing chamber, a concentric annular fuel groove being provided in said base spaced apart from said vaporizing chamber and also radial fuel passages leading from said vaporizing chamber into said annular fuel groove, said passages being open at the top, an annular plate concentric with said vaporizing chamber and loosely supported upon the outer wall of said vaporizing chamber and the inner wall of the annular fuel groove and covering said radial fuel passages, there being air passages extending upwardly through the base and annular plate, a perforated cylindrical wall supported upon the outer wall of said annular groove, and another perforated cylindrical wall supported upon the outer edge of said annular plate, whereby a combustion chamber is formed between said perforated walls.

5. A fuel oil burner having, in combination, a base having a central vaporizing chamber, an annular wall on said base surrounding said vaporizing chamber, there being air passages extending upwardly through said vaporizing chamber, a cover for said vaporizing chamber loosely mounted upon the upper edges of the walls of said air passages, the peripheral edge of said cover being spaced apart from said annular wall, said cover being provided with openings aligning with said air passages, a concentric annular fuel groove being provided in said base spaced apart from said vaporizing chamber, and radial fuel passages leading from said vaporizing chamber intosaid annular fuel groove, said passages being open at the top, and an annular plate concentric with said vaporizing chamber and'loose- 1y supported upon the outer wall of the vaporizing chamber and the inner wall of the annular fuel groove and covering said radial fuel passages, there being air passages extending upwardly through the base and annular plate.

6. A fuel oil burner having, in combination, a base having a central vaporizing chamber, an annular wall on said base surrounding said vaporizing chamber, there being air passages extending upwardly through said vaporizing chamber, a cover for said vaporizing chamber loosely mounted upon the upper edges of the walls of said air passages, the peripheral edge of said cover being spaced apart from said annular wall, said cover being provided with openings aligning with said air passages, a concentric annular fuel groove being provided'in said base spaced apart from said vaporizing chamber, and radial fuel passages leading from said vaporizing chamber into said annular fuel groove, said passages being open at the top, an annular plate concentric with said vaporizing chamber and loosely supported upon the outer wall of the vaporizing chamber and the inner wall of the annular fuel groove and covering said radial fuel passages, there being air passages extending upwardly through the base and annular plate, and upwardly extending perforated cylindrical walls supported upon the outer wall of said annular groove, the outer and inner edges of 'said annular plate and the outer edge of said vaporizing chamber cover, whereby alternate air and combustion chambers are provided.

7. A fuel oil burner having, in combination, a base having a central vaporizing chamber, an annular wall on said base surrounding said vaporizing chamber, there being air passages extending upwardly through said vaporizing chamber, a cover for said vaporizing chamber loosely mounted upon the upper edges of the walls of said air passages, the peripheral edge of said cover being spaced apart from said annular wall, said cover being provided with openings aligning with said air passages, a concentric annular fuel groove being provided in said base spaced apart from said vaporizing chamber and also radial fuel passages leading from said vaporizing chamber into said annular fuel groove, said passages being open at the top, an annular plate concentric with said vaporizing chamber and loosely supported upon the outer wall of said vaporizing chamber and the inner wall of the annular fuel groove and covering said radial fuel passages, an upwardly extended perforated cylindrical wall supported upon said annular plate adjacent its inner edge, and an upwardly extended perforated wall supported upon the outer edge of said cover, whereby an air chamber is provided between said perforated walls.

8. A fuel oil burner having, in combination, a base having a central vaporizing chamber, an annular wall on said base surrounding said vaporizing chamber, there being air passages extending upwardly through said vaporizing chamber, a cover for said vaporizing chamber loosely mounted upon the upper edges of the walls of said air passages, the peripheral edge of said cover being spaced apart from said annular wall, said cover being provided with openings aligning with said air passages, a concentric annular fuel groove being provided in said base spaced apart from said vaporizing chamber, and radial fuel passages leading from said vaporizing chamher into said annular fuel groove, said passages being open at the top, an annular plate concentric with said vaporizing chamber and loosely supported upon the outer wall of the vaporizing chamber and the inner wall of the annular fuel groove and covering said radial fuel passages, there being air passages extending upwardly through the base and annular plate, and upwardly extending perforated cylindrical walls supported upon. the outer and inner edges of said annular plate whereby an air chamber is provided therebetween. V

BERNARD FIELD. 

